bsolute optical frequency measurement 絕對光頻測量; 絕對光頻測 J^g!++|2P  
PV=5UyjW  
absorpting loss in optical thin-film 光學(xué)薄膜的吸收損耗 Tq4-wE+  
7!N2-6GV  
console optical-display plotter 控制臺光顯示繪圖儀 ~B(6+~%  
wLH] <k  
continuous variable optical attenuator 連續(xù)可變光衰減器 Zg.&